/* ══════════════════════════════════════════════════════════════
   EKBai Interactive Demo Styles
   Enterprise Knowledge Brain AI - Local-First Intelligence
   ══════════════════════════════════════════════════════════════ */

/* Layout */
.ek-demo { min-height: 100vh; display: flex; flex-direction: column; background: var(--nbz-bg, #070A13); }

/* Fixed header */
.ek-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; background: color-mix(in srgb, var(--nbz-bg, #070A13) 85%, transparent); backdrop-filter: blur(20px); border-bottom: 1px solid var(--nbz-border, rgba(255,255,255,0.12)); }
.ek-header-inner { max-width: 1200px; margin: 0 auto; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; }
.ek-header-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--nbz-text, rgba(255,255,255,0.93)); font-weight: 700; font-size: 16px; }
.ek-logo-icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: linear-gradient(135deg, var(--nbz-accent, #8B5CF6), var(--nbz-accent-2, #06B6D4)); color: #fff; font-size: 16px; }
.ek-header-actions { display: flex; align-items: center; gap: 12px; }
.ek-step-counter { font-size: 13px; color: var(--nbz-muted, rgba(255,255,255,0.68)); }
.ek-btn-trial { padding: 8px 20px; font-size: 13px; font-weight: 600; background: linear-gradient(135deg, var(--nbz-accent, #8B5CF6), var(--nbz-accent-2, #06B6D4)); color: #fff; border: none; border-radius: 10px; cursor: pointer; text-decoration: none; transition: opacity 0.2s; }
.ek-btn-trial:hover { opacity: 0.9; }
.ek-btn-close { padding: 8px; color: var(--nbz-muted); background: none; border: none; cursor: pointer; font-size: 18px; transition: color 0.2s; text-decoration: none; }
.ek-btn-close:hover { color: var(--nbz-text); }

/* Demo area */
.ek-stage { flex: 1; padding-top: 60px; position: relative; display: flex; flex-direction: column; min-height: 0; }
.ek-stage-bg { position: absolute; inset: 0; opacity: 0.08; transition: background 1s; z-index: 0; }
.ek-scene-container { position: relative; z-index: 1; flex: 1; min-height: 0; display: flex; align-items: flex-start; justify-content: center; padding: 12px 16px; overflow-y: auto; overflow-x: hidden; }
.ek-scene { width: 100%; max-width: 580px; animation: ekFadeIn 0.4s ease-out; }
.ek-scene-wide { max-width: 720px; }

@keyframes ekFadeIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* Scene card */
.ek-card { background: var(--nbz-panel, rgba(255,255,255,0.06)); border: 1px solid var(--nbz-border, rgba(255,255,255,0.12)); border-radius: 20px; overflow: hidden; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); }
.ek-card-header { padding: 14px 18px; border-bottom: 1px solid var(--nbz-border-2, rgba(255,255,255,0.06)); display: flex; align-items: center; gap: 12px; }
.ek-card-icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; color: #fff; font-size: 18px; flex-shrink: 0; }
.ek-card-title { font-size: 14px; font-weight: 700; color: var(--nbz-text); }
.ek-card-subtitle { font-size: 11px; color: var(--nbz-muted); margin-top: 2px; }
.ek-card-badge { margin-left: auto; padding: 5px 12px; border-radius: 999px; font-size: 11px; font-weight: 600; display: flex; align-items: center; gap: 4px; }
.ek-card-body { padding: 16px 18px; }
.ek-card-footer { padding: 12px 18px; border-top: 1px solid var(--nbz-border-2); }

/* Item rows */
.ek-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 14px; background: var(--nbz-panel-3, rgba(255,255,255,0.03)); border: 1px solid var(--nbz-border, rgba(255,255,255,0.12)); margin-bottom: 8px; transition: all 0.3s; }
.ek-item:last-child { margin-bottom: 0; }
.ek-item-icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-size: 16px; flex-shrink: 0; }
.ek-item-info { flex: 1; min-width: 0; }
.ek-item-label { font-size: 13px; font-weight: 600; color: var(--nbz-text); }
.ek-item-desc { font-size: 11px; color: var(--nbz-muted); margin-top: 2px; }
.ek-item-value { font-size: 14px; font-weight: 700; color: var(--nbz-text); text-align: right; }
.ek-item-badge { padding: 4px 10px; border-radius: 999px; font-size: 10px; font-weight: 600; }

/* Status colors */
.ek-status-green { background: rgba(34,197,94,0.12); color: #22c55e; border-color: rgba(34,197,94,0.2); }
.ek-status-blue { background: rgba(59,130,246,0.12); color: #3b82f6; border-color: rgba(59,130,246,0.2); }
.ek-status-amber { background: rgba(245,158,11,0.12); color: #f59e0b; border-color: rgba(245,158,11,0.2); }
.ek-status-violet { background: rgba(var(--nbz-accent-rgb, 139,92,246),0.12); color: var(--nbz-accent, #8b5cf6); border-color: rgba(var(--nbz-accent-rgb, 139,92,246),0.2); }
.ek-status-cyan { background: rgba(6,182,212,0.12); color: #06b6d4; border-color: rgba(6,182,212,0.2); }

/* Progress bar */
.ek-progress { height: 8px; background: var(--nbz-panel-3); border-radius: 999px; overflow: hidden; }
.ek-progress-bar { height: 100%; border-radius: 999px; transition: width 0.5s ease-out; }

/* Stats grid */
.ek-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ek-stats-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.ek-stat { text-align: center; padding: 8px; border-radius: 12px; background: var(--nbz-panel-3); }
.ek-stat-num { font-size: 16px; font-weight: 800; color: var(--nbz-text); }
.ek-stat-label { font-size: 10px; color: var(--nbz-muted); margin-top: 3px; text-transform: uppercase; letter-spacing: 0.05em; }

/* Grid layouts */
.ek-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.ek-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }

/* Spinner animation */
@keyframes ekSpin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.ek-spin { animation: ekSpin 1s linear infinite; }

/* Pulse animation */
@keyframes ekPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.ek-pulse { animation: ekPulse 2s ease-in-out infinite; }

/* Typing dots */
.ek-typing { display: flex; gap: 5px; padding: 12px 16px; }
.ek-typing span { width: 8px; height: 8px; border-radius: 50%; background: var(--nbz-accent, #8B5CF6); }
@keyframes ekBounce { 0%, 60%, 100% { transform: translateY(0); } 30% { transform: translateY(-8px); } }
.ek-typing span:nth-child(1) { animation: ekBounce 1.4s infinite 0ms; }
.ek-typing span:nth-child(2) { animation: ekBounce 1.4s infinite 200ms; }
.ek-typing span:nth-child(3) { animation: ekBounce 1.4s infinite 400ms; }

/* Controls panel */
.ek-controls { background: var(--nbz-panel, rgba(255,255,255,0.06)); border-top: 1px solid var(--nbz-border); padding: 12px 16px 16px; flex-shrink: 0; }
.ek-controls-inner { max-width: 800px; margin: 0 auto; }

/* Step info */
.ek-step-info { text-align: center; margin-bottom: 10px; }
.ek-step-badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: 999px; color: #fff; font-size: 11px; font-weight: 600; margin-bottom: 6px; }
.ek-step-title { font-size: clamp(16px, 2.5vw, 22px); font-weight: 800; color: var(--nbz-text); margin: 0 0 4px; }
.ek-step-desc { font-size: 12px; color: var(--nbz-muted); max-width: 520px; margin: 0 auto; line-height: 1.5; }

/* Progress track */
.ek-progress-track { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.ek-nav-btn { width: 40px; height: 40px; border-radius: 12px; border: none; background: var(--nbz-panel-3); color: var(--nbz-text); cursor: pointer; display: grid; place-items: center; font-size: 16px; transition: background 0.2s; flex-shrink: 0; }
.ek-nav-btn:hover { background: var(--nbz-border); }
.ek-segments { display: flex; gap: 4px; flex: 1; overflow-x: auto; padding: 4px 0; }
.ek-segment { flex: 1; min-width: 18px; height: 6px; border-radius: 999px; background: var(--nbz-panel-3); overflow: hidden; cursor: pointer; transition: transform 0.1s; }
.ek-segment:hover { transform: scaleY(1.4); }
.ek-segment-fill { height: 100%; border-radius: 999px; width: 0; transition: width 0.05s linear; }

/* Play/pause */
.ek-play-row { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 10px; }
.ek-play-btn { width: 38px; height: 38px; border-radius: 50%; border: none; background: linear-gradient(135deg, var(--nbz-accent, #8B5CF6), var(--nbz-accent-2, #06B6D4)); color: #fff; cursor: pointer; display: grid; place-items: center; font-size: 14px; transition: opacity 0.2s; }
.ek-play-btn:hover { opacity: 0.9; }
.ek-play-label { font-size: 12px; color: var(--nbz-muted); }

/* CTA */
.ek-cta { text-align: center; }
.ek-cta-btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 26px; font-size: 14px; font-weight: 700; background: linear-gradient(135deg, var(--nbz-accent, #8B5CF6), var(--nbz-accent-2, #06B6D4)); color: #fff; border: none; border-radius: 14px; cursor: pointer; text-decoration: none; box-shadow: 0 8px 25px rgba(var(--nbz-accent-rgb, 139,92,246),0.25); transition: transform 0.2s, box-shadow 0.2s; }
.ek-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(var(--nbz-accent-rgb, 139,92,246),0.35); }
.ek-cta-sub { font-size: 11px; color: var(--nbz-muted); margin-top: 8px; }

/* Chat styles */
.ek-chat-msg { padding: 12px 16px; border-radius: 16px; font-size: 13px; line-height: 1.6; max-width: 90%; margin-bottom: 12px; animation: ekFadeIn 0.3s ease-out; white-space: pre-line; }
.ek-chat-msg-user { background: linear-gradient(135deg, var(--nbz-accent, #8B5CF6), var(--nbz-accent-2, #06B6D4)); color: #fff; margin-left: auto; border-bottom-right-radius: 4px; }
.ek-chat-msg-ai { background: var(--nbz-panel-3); color: var(--nbz-text); border-bottom-left-radius: 4px; }
.ek-chat-input { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-radius: 16px; background: var(--nbz-panel-3); border: 1px solid var(--nbz-border); }
.ek-chat-input i { color: var(--nbz-muted); font-size: 16px; }
.ek-chat-input span { flex: 1; font-size: 13px; color: var(--nbz-muted); }

/* Knowledge graph visualization */
.ek-graph-container { position: relative; height: 200px; background: var(--nbz-panel-3); border-radius: 16px; overflow: hidden; }
.ek-graph-node { position: absolute; padding: 8px 14px; border-radius: 10px; font-size: 11px; font-weight: 600; display: flex; align-items: center; gap: 6px; transition: all 0.4s ease-out; }
.ek-graph-line { position: absolute; background: var(--nbz-border); transform-origin: left center; }

/* Connector icons */
.ek-connector { display: flex; align-items: center; gap: 10px; padding: 12px; border-radius: 14px; background: var(--nbz-panel-3); border: 1px solid var(--nbz-border); }
.ek-connector-icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font-size: 16px; }

/* Gradient helpers */
.ek-grad-violet { background: linear-gradient(135deg, var(--nbz-accent, #8B5CF6), #A855F7); }
.ek-grad-cyan { background: linear-gradient(135deg, #06B6D4, #0891B2); }
.ek-grad-blue { background: linear-gradient(135deg, #3B82F6, #2563EB); }
.ek-grad-emerald { background: linear-gradient(135deg, #10B981, #059669); }
.ek-grad-amber { background: linear-gradient(135deg, #F59E0B, #D97706); }
.ek-grad-rose { background: linear-gradient(135deg, #F43F5E, #E11D48); }
.ek-grad-indigo { background: linear-gradient(135deg, #6366F1, #4F46E5); }
.ek-grad-teal { background: linear-gradient(135deg, #14B8A6, #0D9488); }
.ek-grad-orange { background: linear-gradient(135deg, #F97316, #EA580C); }
.ek-grad-pink { background: linear-gradient(135deg, #EC4899, #DB2777); }
.ek-grad-slate { background: linear-gradient(135deg, #64748B, #475569); }
.ek-grad-sky { background: linear-gradient(135deg, #0EA5E9, #0284C7); }

/* Local badge */
.ek-local-badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 999px; font-size: 10px; font-weight: 700; background: rgba(16,185,129,0.15); color: #10B981; border: 1px solid rgba(16,185,129,0.25); text-transform: uppercase; letter-spacing: 0.05em; }
.ek-local-badge i { font-size: 10px; }

/* Responsive */
@media (max-width: 768px) {
  .ek-demo { touch-action: manipulation; }
  .ek-header-inner { padding: 10px 12px; }
  .ek-header-logo { font-size: 14px; gap: 8px; }
  .ek-logo-icon { width: 32px; height: 32px; font-size: 14px; }
  .ek-btn-trial { padding: 6px 14px; font-size: 12px; }
  .ek-controls { padding: 10px 12px 14px; }
  .ek-cta-btn { padding: 12px 20px; font-size: 14px; min-height: 48px; }
  .ek-nav-btn { min-width: 44px; min-height: 44px; }
  .ek-play-btn { min-width: 44px; min-height: 44px; }
}

@media (max-width: 640px) {
  .ek-scene-container { min-height: 260px; padding: 10px 12px; }
  .ek-step-counter { display: none; }
  .ek-stats { grid-template-columns: repeat(2, 1fr); }
  .ek-stats-4 { grid-template-columns: repeat(2, 1fr); }
  .ek-grid-2 { grid-template-columns: 1fr; }
  .ek-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .ek-card { border-radius: 16px; }
}

@media (max-width: 480px) {
  .ek-header-inner { padding: 8px 10px; }
  .ek-btn-trial { padding: 5px 10px; font-size: 11px; }
  .ek-controls { padding: 8px 10px 12px; }
  .ek-step-title { font-size: 16px; }
  .ek-step-desc { font-size: 11px; }
  .ek-cta-btn { width: 100%; justify-content: center; }
}

/* RTL Support */
[dir="rtl"] .ek-demo { direction: rtl; }
[dir="rtl"] .ek-header-inner { flex-direction: row-reverse; }
[dir="rtl"] .ek-header-logo { flex-direction: row-reverse; }
[dir="rtl"] .ek-header-actions { flex-direction: row-reverse; }
[dir="rtl"] .ek-card-header { flex-direction: row-reverse; }
[dir="rtl"] .ek-card-badge { margin-left: 0; margin-right: auto; }
[dir="rtl"] .ek-item { flex-direction: row-reverse; }
[dir="rtl"] .ek-item-value { text-align: left; }
[dir="rtl"] .ek-progress-track { flex-direction: row-reverse; }
[dir="rtl"] .ek-segments { flex-direction: row-reverse; }
[dir="rtl"] .ek-cta-btn { flex-direction: row-reverse; }
[dir="rtl"] .ek-chat-msg-user { margin-left: 0; margin-right: auto; border-bottom-right-radius: 16px; border-bottom-left-radius: 4px; }
[dir="rtl"] .ek-chat-msg-ai { border-bottom-left-radius: 16px; border-bottom-right-radius: 4px; }
[dir="rtl"] .ek-scene { text-align: right; }
[dir="rtl"] .ek-item-info { text-align: right; }